All of these spectrograms have been created using bat calls recorded from a Raspberry Pi bat recorder. Click on an image to display full screen. If I have incorrectly identified a bat species, let me know 🙂
Soprano Pipistrelle Bat
Serotine Bat
Noctule Bat
Natterer’s Bat
Myotis Species
Various Social Calls
Rat Distress Call
Note the faint bat (Common Pipistrelle?) call, too.